import {PDFDocument} from "pdf-lib";

let [pdfPath, csPath] = Deno.args;

while (!pdfPath || !pdfPath.endsWith('.pdf')) pdfPath = prompt("Please provide path to PDF file:") || "";
while (!csPath || !csPath.endsWith('.cs')) csPath = prompt("Please provide path to CS class file:") || "";

const pdfBytes = await Deno.readFile(pdfPath);

const pdfDoc = await PDFDocument.load(pdfBytes);

const form = pdfDoc.getForm();

const fields = form.getFields();
const csFiles = await Promise.all(csPath.split(",").map(c => Deno.readTextFile(c.trim())));

const fieldNames:string[] = fields.map(f => f.getName())
.filter(f => {
  const rx = new RegExp(`(?<!//\s?)case ?"${f}"`)
  return !csFiles.some(c => rx.test(c))
})
.filter(f => !f.toLowerCase().includes("signature"));

if (fieldNames.length) {
  console.log("%cThe following field names are not present in the CS code", "color: red")
  console.log(fieldNames)
  alert("Your princess is in another castle...")
} else {
  console.log("%cAll form fields present", 'color: lime')
  alert("Ok!")
}